<html>
<style>
#boxShadow {
  height: 210px;
  width: 290px;
  box-shadow: 0px 0px 2px graytext inset;
}

#leftCover {
  width: 30px;
  height: 300px;
  background-color: white;
  position: absolute;
  left: 0px;
  top: 0px;
}

#rightCover {
  width: 20px;
  height: 300px;
  background-color: white;
  position: absolute;
  top: 0px;
  left: 280px;
}
</style>
<body>
<div id="boxShadow">test</div>
<div id="leftCover"></div>
<div id="rightCover"></div>
</body>
